Symantec Security 5600 Series, Security 5400 Series,Clientless VPN 4400 Series, Administration Manual

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357 Preventing attacks
Increasing productivity by identifying spam email
Related information
For further information related to this topic, see the following:
■
“Adding antispam protection to a rule” on page 358
■
“Understanding and using licenses” on page 86
Reducing false positives using a custom allow list
You can create a custom list of addresses or domains that are permitted to bypass the Email senders
identified as spam list, the subject patterns identified as spam list, and heuristic scanning. If the
envelope sender matches a domain or email address that is entered in the Email senders to allow list,
the email message is automatically delivered to the recipient. The message receives no further spam
processing.
Note: Email messages from addresses or domains that are listed in the allow list are still processed for
content violations and viruses.
Ensure that you enable the senders list setting in the appropriate security gateway rule. You must also
have a valid Firewall Base license. If you do not, the security gateway does not attempt to use this
antispam scanning process.
Note: This feature is only available for SMTP.
Prerequisites
None.
To reduce false positives using a custom allow list
1 In the SGMI, in the left pane, under Policy, click Antispam .
2
In the right pane, on the Configuration tab, to the right of the Email senders to allow list, click Add .
3 In the Senders Allowed dialog box, in the Sender address text box, type the IP address or fully
qualified domain name.
4 Click OK .
5 Optionally, do one of the following:
■
To save your configuration now and activate later, on the toolbar, click Save .
■
To activate your configuration now, on the toolbar, click Activate .
When prompted to save your changes, click Yes .
Related information
For further information related to this topic, see the following:
■
“About the antispam scanning process” on page 350
■
“Adding antispam protection to a rule” on page 358
■
“Understanding and using licenses” on page 86